the following blood of commodity they were available for sale during the year beginning inventory was 12 units and $48 first purchase 17 units at 50 $3 second purchase 27 units at 55 hours their purchase 15 units at 58 dollars The firm uses the periodic system and there are 26 units of the commodity on hand at the end of the year what is the ending inventory balance end of the year according to the fifo method.